毕设基本摘要
摘 要
拟建中的温泉公寓2号楼位于苏州新区，西邻珠江路，北邻竹园路，场地以北为已建一期工程。由苏州高新技术创业中心投资建设，由4幢高层及裙房，附带下沉式广场及餐饮娱乐设施组成，场地下均设有两层地下室相连通，为框剪和框架结构。建筑场地地表绝对标高在+2.48m和+3.85m之间，以1985国家高程基准为准。基坑实际开挖深度分布：北侧约7.5m，西侧及南侧、东侧均为10m。基坑开挖深度在7.00m-9.00m之间。
结合本工程地质、环境、挖深等诸多因素确定安全可靠的支护方案；为基坑土方开挖和地下室施工创造一个安全干燥的施工环境；考虑到邻近坑边有建筑和道路（下设有水、电、气等管线），为确保安全，以“变形”控制设计。
本着“安全可靠、经济合理、技术可行、施工方便”原则，整个基坑采用一排钻孔灌注桩作挡土结构, 锚杆支撑(局部地段采用钢管竖向斜撑)作为支撑结构体系。基坑四周采用深层搅拌桩作止水帷幕。基坑内采用轻型井点降水+集水坑排水。
关键词：深基坑，支护结构，挡土结构，锚杆支撑
The Hot spring apartment 2nd building hole
Abstract
The Hot spring apartment 2nd building hole excavated for building foundation supports and protections design in Suzhou city, in the western of Zhu jiang Road and north behind Zhuyuan Road, closed with Previous Project One. The contractor, High technical Development Center of Suzhou, do the construction, consisted by 4 tall buildings and annexs,sinked plaza and catering entertainment facilities, including 2 basements, classified as frame and shearing wall construction. The average level of the construction for 0.00, absolute level is +2.48–+3.85 meters, according to the National 1985 regulations. The depth of excavation is between 7-9 meters.
Considering of the geologic environment, excavation depth of the foundation pit, to create a safe and dry surroundings for the earth work and basement, we carry out the design in control of displacement deformation, in order to keep main traffic roads and buildings safe and to protect pipelines of water, electricity and coal gas below the surface well.
According with fundamental technical standard, approaching safe reliability, the economical-reasonable and convenient construction and guaranteeing project time limit，we use non-displacement piles as retaining structure, anchor rod bracing and inclined steel pipe bracing concrete bracing as bracing structures. Around the foundation pit, we use deep churning piles as detaining water pile construct enclosed cut off trench. With the purpose of dewatering, we use sump and well point.
Key words: Foundation pit, Bracing structure, Retaining structure, Anchor Rod bracing
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